Optimization of solving time: EDEM wear simulation

I am modeling an erosion machine; in this case, the general geometry is just representative to indicate the limits of the simulation. The most important parts are the factory corresponding to the little circle at the end of the injector and the sampling plate. I am including the velocity and vorticity field and considering sand particles. The main objective is to accurately predict wear in the sampling plate, but the simulation is taking a lot of time since the mesh is around 0.15 mm (similar to sand size). Also, I am simulating in a workstation with an AMD Ryzen Threadripper PRO 3945WX 12-Cores, 64 GB RAM, and a P2000 graphics card. I am using a CUDA solver in this case, but I want to ask about some recommendations to improve simulation speed. I am thinking of reducing the limits and developing an axisymmetric simulation, and maybe use a coarser mesh but I dont know if it can change a lot in the wear results.